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1987 - 1996 F150 & Larger F-Series Trucks 1987 - 1996 Ford F-150, F-250, F-350 and larger pickups - including the 1997 heavy-duty F250/F350+ trucks

Wiper Problems

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Old Feb 16, 2013 | 05:07 PM
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Wiper Problems

Searched the forums already for this but I was hoping for some more specific advice.

Have a 94 F150 (5.0) with erratic wipers - will not park, cut off randomly, intermittent setting completely sporadic, same problems repeated over and over on the threads. At first I thought it was the motor as it seems to be making some odd noises when running but after searching around I'm not so sure anymore.

So the question is (before I start arbitrarily replacing things) wouldn't a faulty MFS also affect the turn signals? I ask because they seem to be blinking rather quickly. I haven't had the truck for long so I can't say for certain that they're abnormally fast but they are definitely blinking two to three times faster than they would on my 90 Ranger.

I was thinking about swapping out the MFS first for this reason. Any guidance would be appreciated.
 
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Old Feb 16, 2013 | 06:16 PM
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Couple other things I've just noticed:

-High/Low settings basically work but begin to slow down until they are eventually switched off.

-Hitting the washer fluid turns the wipers on full regardless of the setting after which they will not stop until the truck is switched off.
 
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Old Feb 17, 2013 | 03:28 PM
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Have you looked at this one?
https://www.ford-trucks.com/forums/5...-cost-fix.html
 
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Old Feb 17, 2013 | 04:59 PM
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I have. I was going to give that a try earlier this afternoon but then decided I should go ahead and just replace the motor anyway since it's making a sound like a blender eating a fork.

But something tells me that's not going to fix the problem. I was asking about the MFS specifically because my blinkers are also acting odd. That stands to reason - being that both are run through the same switch - that the two problems are connected, yeah?
 
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Old Feb 17, 2013 | 06:52 PM
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I had cleaned the contact a bit but after reading the message I went back and gave them a pretty good cleaning with contact cleaner, etc. and was very happy the wipers now work on high, low, intermittent and they park. On mine the wiper is a dash switch and the turn signals are on the steering column so we have a different set up. I hope you work it out.
 
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